CN1083503C - Full-automatic washer - Google Patents

Abstract

The present invention mainly solves the problem that the gap between the washing and dehydrating tank is enlarged due to the deformation and inclination of the washing and dehydrating tank due to the imbalance during dehydration, or the dehydration speed cannot be increased as a last resort. The measure is that the material of the fluid balancer adopts FRPP (containing about 7-12% glass fiber), so that the strength of the ring is improved. Therefore, it is possible to obtain a washing and dehydrating tank with low price, high productivity, and high rigidity, and to provide a compact fully automatic washing machine capable of high-speed dehydration.

Description

automatic washing machine

The invention relates to a full-automatic washing machine which can withstand high-speed dehydration rotation and has a high-rigidity washing and dehydration tank.

The stainless steel washing and dewatering tank of the existing fully automatic washing machine is composed of a substantially cylindrical shell plate, a substantially annular upper ring with a flange, and a substantially disc-shaped bottom plate with a concave portion at the bottom. The combination of various parts is connected by seam welding, and a fluid balancer made of synthetic resin is installed on the upper ring.

When the inner diameter of the washing and dewatering tank is 450-470 mm, the dehydration speed is 900-1100 rpm. In the case of no upper ring, the dehydration speed is 800-900 rpm.

In the case of having an upper ring, since the number of parts increases, it is unfavorable in terms of productivity and cost.

And under the situation that there is no upper ring, the gap with the outer tank is enlarged due to the deformation and skew of the washing and dehydration tank caused by the imbalance during dehydration, or the dehydration speed cannot be increased as a last resort.

The object of the present invention is to provide a washing and dehydrating tank free from the above-mentioned disadvantages, which is inexpensive, has good productivity, and has high rigidity.

The fully automatic washing machine of the present invention comprises: a washing and dewatering tank with rotating blades at the bottom, an outer tank in which the washing and dewatering tank is freely rotatable, and a supporting device for shockproof supporting the outer tank by a shell, the rotating blades and The driving device for driving the washing and dehydrating tank; wherein: the shell plate constituting the washing and dehydrating tank is made of stainless steel plate, and the inner side of the shell plate top of the washing and dehydrating tank is installed with glass containing 7-12% Fluid balancer made of fiber synthetic resin.

The fully automatic washing machine of the present invention comprises: a washing and dewatering tank with rotating blades at the bottom, an outer tank in which the washing and dewatering tank is freely rotatable, and a supporting device for shockproof supporting the outer tank by a shell, the rotating blades and The driving device for driving the washing and dehydrating tank; wherein: the shell plate and the bottom plate constituting the washing and dehydrating tank are made of stainless steel plates, and the inside of the shell plate top of the washing and dehydrating tank is installed with 10% glass fiber Fluid balancer made of synthetic resin.

A brief description of the accompanying drawings:

Fig. 1 is a longitudinal sectional view of a washing machine according to an embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of a washing and dehydrating tank according to an embodiment of the present invention.

Fig. 3 is a longitudinal sectional view showing a conventional washing and dehydrating tank.

Figure 4 is a comparison chart of physical properties of FRPP.

Figure 5 is a comparison chart of physical properties of FRPP.

Fig. 6 is a graph showing the average wall thickness and the amount of deformation of the fluid balancer.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

Figure 1 shows the basic structure of a fully automatic washing machine.

1 is an approximately box-shaped steel plate housing with an internal mechanism inside; 2 is a stainless steel washing and dewatering tank, which is approximately cylindrical with a bottom, and has a plurality of dehydration holes 2a on the side wall. There are hollow annular upper balancer 3 and lower balancer 4 filled with fluid, and a rotatable stirring impeller 5 is arranged in the center of the bottom.

6 is a bottomed and roughly cylindrical outer tank that is equipped with washing and dehydration tank 2 rotatably and accepts washing water. At the bottom, a central base 8 made of steel plate is used to install the driving part. There is a concave-spherical suspender seat 6a holding the anti-vibration device 9, and the anti-vibration device 9 is suspended from the concave-spherical corner plate 1a fixed on the four corners of the upper end of the housing 1 with the entire outer tank.

In addition, a tank cover 7 made of synthetic resin is fixed to the upper opening to prevent laundry from falling into the gap between the outer tank 6 and the washing and dehydrating tank 2 .

The shockproof device 9 is composed of a boom 9a, a shockproof spring 9b, a sliding cylinder 9c, a spring seat 9d, a boom holder 9e, and the like.

The upper end of the suspension rod 9a is fixed with a suspension rod holder 9e with a convex spherical surface, and the holder 9e fits with the concave spherical surface of the corner plate 1a.

The sliding cylinder 9c has a convex spherical surface fitted with the concave spherical surface of the suspender seat 6a, and is provided with an anti-vibration spring 9b and a spring seat 9d inside. One of the inner surfaces of the sliding cylinder 9c vibrates while rubbing.

The driving part is composed of a motor 10 , a clutch 11 , and a V-belt 12 , and the rotation of the motor 10 is transmitted to the clutch 11 through the motor pulley 13 , the V-belt 12 , and the P pulley 14 .

The clutch 11 has a clutch spring mechanism, a reduction gear, etc. for switching between washing and dehydration, as well as a washing shaft 11a and a dehydration shaft 11b.

The stirring impeller 5 is fixed on the washing shaft 11a, and the washing and dehydrating tank 2 is fixed on the dehydrating shaft 11b through the flange 15. During washing, the rotational force is transmitted to the stirring impeller 5 through the internal reduction gear and the washing shaft 11a. During dehydration, the rotation force is transmitted to the washing and dehydrating tank 2 through the dehydration shaft 11b instead of the reduction gear for dehydration.

Drain device is made up of drain valve 16, drain hose 17. One end of the drain valve 16 is connected to the drain port 6 b located at the bottom of the outer tank 6 , and the other end is connected to the drain hose 17 . The other end of the drain hose 17 is drawn out of the machine from the drain hose outlet 30 .

The water level detection system carries out the pressure detection by the water level sensor 20 through the air duct 19 from the gas blocking box 6c arranged on the outer tank 6 .

21 is the water supply solenoid valve, one end of which is connected with the water plug by the water supply hose, and the other end is connected with the water injection port 22.

23 is an upper cover with a panel box part, and a control unit 24 as a control part, a water level sensor 20 for controlling the water level, a power switch 25, an input switch part 26, a status display part 27, etc. are housed inside it.

The panel box portion 28 is provided at two places on the front side and the rear side, and is equipped with a front panel 29 and a rear panel 30 , respectively.

In addition, the upper cover 23 is provided with an opening 23a for putting in clothes and a cover body 31 for opening and closing the opening 23a, and also includes an upper opening of the casing 1 .

The above is the overall composition.

Below in conjunction with Fig. 2, the washing and dehydration tank 2 will be described in detail.

The washing and dehydrating tank 2 includes a shell plate 41 and a bottom plate 42, which are made of stainless steel plates respectively.

The shell plate 41 is formed by forming a flat plate into an annular shape, and the ends are fixed by seam welding, and a plurality of outward inner flange-shaped dewatering holes 2a are also provided.

The bottom plate 42 has a substantially disk-like shape, and its end peripheral portion is connected to the lower end peripheral portion of the case plate 41 by seam welding 2b.

The upper end portion of the case plate 41 is shaped into a bead shape to provide the reduced-diameter portion 41a and to increase the section modulus.

The upper balancer 3 is provided with a skirt portion 3 a on the outer peripheral portion, which is fitted into the reduced-diameter portion 41 a of the case plate 41 and fixed with screws 43 .

Since the reduced diameter portion 41a is provided, the outer diameter of the skirt portion 3a is substantially the same as the outer diameter of the central portion of the casing plate 41, and the gap (about 15 mm) with the inner peripheral surface of the outer tank 6 is not reduced.

The lower balancer 4 is built-in in the bottom plate 42 and fixed with screws 44 from the bottom of the bottom plate 42 .

The central lower part of the bottom plate 42 is installed with a flange 15 and a screw 45 having a hole for fitting with the dehydration shaft 11b to fix the washing and dehydration tank 2 on the dehydration shaft 11b.

During the dehydration operation, because the washing and dehydration tank 2 is unbalanced due to the bias of underwear and rotates at a high speed of about 1000 rpm, a large vibration is generated.

In order to reduce this vibration, the upper balancer 3 and the lower balancer 4 are provided. However, if the strength of the washing and dehydrating tank 2 is insufficient, there will be problems that the washing and dehydrating tank 2 will deform due to unbalanced centrifugal force and contact the outer tank. .

At this time, although the method of enlarging the gap (about 15 mm) between the washing and dehydrating tank 2 and the outer tank 6 can be adopted, the appearance of the body becomes larger and the problems of vibration/noise are not satisfactory.

As a deformation form of the washing and dehydrating tank 2, there is a compensating force of the balancer acting in the opposite direction for skew, deformation, imbalance, and the opposite direction around the joint of the dehydrating shaft of the entire washing and dehydrating tank 2, which is a uniaxial support structure. Oval deformation of the housing plate 41 and local expansion of the housing plate 41 of the unbalance concentration.

Since the bending moment added to the bottom of the washing and dehydrating tank 2 is the main cause of the skew deformation, the deformation can be reduced by separating the base plate 42 from the shell plate 41, selecting the most appropriate plate thickness of the base plate 42 and the composite strength of the flange 15. Control below the specified amount.

When the inner diameter of the shell plate 41 is 470 mm, the plate thickness of the bottom plate 42 is 1.2 mm, and the plate thickness of the shell plate is 0.7 mm.

Regarding the elliptical deformation of the shell plate 41, as shown in FIG. The pressure ring strength of the case plate 41 is ensured, but it is not satisfactory in terms of productivity and cost due to an increase in the number of parts.

In addition, for the structure without the upper ring 46, the dehydration speed is limited to about 900 rpm.

Therefore, in the present invention, the upper balancer 3 that used to be made of polypropylene (hereinafter abbreviated as PP) is replaced with glass fiber reinforced polypropylene (hereinafter abbreviated as FRPP), so that the bending modulus of elasticity is improved, and the upper balancer 3 is improved. The ring strength ensures most of the necessary rigidity. Here, the glass fiber content is preferably 7-12%, so it is set at about 10%.

As shown in Figure 4 and Figure 5, if the content of glass fiber increases, the mechanical strength increases proportionally, but the elongation decreases.

If the elongation rate is low, cracks may occur due to a slight impact during assembly or transportation, and in the worst case, it will cause damage and mess, which poses a safety problem.

According to the above analysis, as shown in Figure 6, the content of glass fiber is about 10%, and the average wall thickness of the upper balancer 3 of the hollow annular body is 3.5 mm, then the same rigidity as that of the structure with the upper ring 46 can be obtained .

At this time, since the lower balancer 4 is built in the bottom plate 42, it is generally sufficient to use PP.

In addition, since the local expansion of the case plate 41 occurs between the screws 43, even some circumference difference can be controlled by providing the skirt 3a of the upper balancer 3.

A plurality of inner blades 5a are integrally arranged on the inner side of the stirring impeller 5, and cooperate with the circulation circuit cover 48 on the inner peripheral side wall surface of the washing and dehydrating tank 2 to form a washing water circulation circuit 47.

The circulation circuit cover 48 has the height to the upper part of the wall surface of the washing and dehydrating tank 2, and the lower part is facing the outer periphery of the inner blade 5a and is provided with a water guide opening 49.

A discharge port 50 is provided toward the inside of the washing and dehydrating tub 2 at the upper portion of the circulation circuit cover 48 .

There are wool-absorbing nets 51 installed in 50 places of the discharge port in a detachable manner. A plurality of circulation circuits 47 are provided, and a circulation circuit for spraying washing liquid is provided.

During washing, once the agitating impeller rotates, the washing water is pressed out to the water guide opening 49 due to the action of the centrifugal pump of the inner blades and then sprayed out from the discharge port 50 through the circulation circuit 47 .

52 and 53 are inner edge flanging-shaped drainage holes arranged in the circulation loop 47 .

This is because the water contained in the laundry and the remaining water enter the circulation loop 47 when the dehydration is started, thereby causing an imbalance. To prevent the secondary resonance amplitude from increasing, drain holes are provided at the upper and lower parts.

The inner edge is flanged to prevent the lint, lint, etc. from getting stuck.

The upper drain hole 52 is effective when the dehydration start characteristic is good at a small load, and the lower drain hole 53 is effective when the load is above a medium capacity or the dehydration start characteristic is gentle. This allows for a smooth spin start.

In addition, if a plurality of drainage holes with a diameter of about 5 mm are provided, stagnant washing water will be discharged, so there is almost no influence on the amount of circulating water.

Adopt the present invention described above, because the material of upper balancer uses the PP (FRPP) that contains the glass fiber of about 7-12%, can obtain good productivity, high rigidity washing and dewatering tank with cheap price, provide high-speed A compact fully automatic washing machine for dehydration.

In the previous embodiment, FRPP was selected as the material, but the same effect can be obtained even if other water injection ports are developed.

Claims (2)

1. automatic washing machine, comprise: the bottom has the washing and dewatering groove of rotary vane, the water jacket of above-mentioned washing and dewatering groove is housed with freely rotating, by shell above-mentioned water jacket is prevented the supporting arrangement of seismic support, the drive unit that above-mentioned rotary vane and above-mentioned washing and dewatering groove are driven; It is characterized in that: the shell plates that constitutes described washing and dewatering groove is made by corrosion resistant plate, in the described shell plates upper inner of described washing and dewatering groove the plastic fluid balancer that contains the 7-12% glass fibre is installed.

2. automatic washing machine, comprise: the bottom has the washing and dewatering groove of rotary vane, the water jacket of above-mentioned washing and dewatering groove is housed with freely rotating, by shell above-mentioned water jacket is prevented the supporting arrangement of seismic support, the drive unit that above-mentioned rotary vane and above-mentioned washing and dewatering groove are driven; It is characterized in that: the shell plates and the base plate that constitute described washing and dewatering groove are made by corrosion resistant plate, and the described shell plates upper inner of described washing and dewatering groove is equipped with the plastic fluid balancer that contains 10% glass fibre.

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